Quarter	Percent, Seasonally Adjusted
1998-01-01	59.8863203313484
1998-04-01	59.8516713179400
1998-07-01	59.9886646353556
1998-10-01	59.9951435309666
1999-01-01	60.1048054539498
1999-04-01	60.2550951783761
1999-07-01	60.2586734303268
1999-10-01	60.3493515704524
2000-01-01	60.3506179375296
2000-04-01	60.6928807675119
2000-07-01	60.9610318670919
2000-10-01	61.2950221535883
2001-01-01	61.2610349128793
2001-04-01	61.1423462995599
2001-07-01	61.3366377337049
2001-10-01	61.4445479427710
2002-01-01	61.7541394115004
2002-04-01	61.7228394559674
2002-07-01	61.7411545753278
2002-10-01	61.9213177709617
2003-01-01	61.9775928043080
2003-04-01	62.0213656985415
2003-07-01	62.2557417682606
2003-10-01	62.5217834501970
2004-01-01	62.1461078734230
2004-04-01	62.4926836724675
2004-07-01	62.5400319382182
2004-10-01	62.3579562993830
2005-01-01	62.1499074408514
2005-04-01	62.0673806264837
2005-07-01	62.0405386171995
2005-10-01	62.1843255521152
2006-01-01	62.5090438655899
2006-04-01	62.7230702892179
2006-07-01	62.5070383030744
2006-10-01	62.4387678494716
2007-01-01	62.4751152162370
2007-04-01	62.6301003187922
2007-07-01	62.7841494311173
2007-10-01	62.6867538405734
2008-01-01	62.4954814510977
2008-04-01	62.5061787550134
2008-07-01	62.2930192234446
2008-10-01	61.8973629552918
2009-01-01	61.3115157287642
2009-04-01	60.9234484605601
2009-07-01	60.6077580822554
2009-10-01	60.3442699220554
2010-01-01	60.2707991402602
2010-04-01	59.9803312464544
2010-07-01	59.6348468552699
2010-10-01	59.8253613809436
2011-01-01	59.8893011841596
2011-04-01	59.8123428919438
2011-07-01	59.7620697139738
2011-10-01	59.3583865685092
2012-01-01	59.1806616411222
2012-04-01	58.9779661876812
2012-07-01	58.8239141712700
2012-10-01	58.4688347299765
2013-01-01	57.7758974196623
2013-04-01	57.2517497313022
2013-07-01	57.0817527234946
2013-10-01	57.1474521801272
2014-01-01	57.1217859799763
2014-04-01	57.2744649156581
2014-07-01	57.2231439212790
2014-10-01	57.3791834802455
2015-01-01	57.5587808417911
2015-04-01	57.6622059719972
2015-07-01	58.3014069177607
2015-10-01	58.3411669426576
2016-01-01	58.4948663553199
2016-04-01	58.9031053647718
2016-07-01	58.6843712622125
2016-10-01	58.9697789321906
2017-01-01	59.3367114529704
2017-04-01	59.2394688237632
2017-07-01	59.4150834003950
2017-10-01	59.6139814478275
2018-01-01	59.6699363155999
2018-04-01	60.0391813227094